{
  description = "A Nix flake for the rate_music Rust project";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    rust-overlay.url = "github:oxalica/rust-overlay";
    crane.url = "github:ipetkov/crane";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs =
    {
      self,
      nixpkgs,
      rust-overlay,
      crane,
      flake-utils,
      ...
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        overlays = [ (import rust-overlay) ];
        pkgs = import nixpkgs { inherit system overlays; };

        # 1. Define the Rust toolchain
        rustToolchain = pkgs.rust-bin.stable.latest.default;

        # 2. Configure crane to use our specific toolchain
        craneLib = (crane.legal.lib.${system}).overrideToolchain rustToolchain;

        # 3. Define common build inputs (system libraries)
        # mpris and sqlx often need pkg-config and specific C libraries
        nativeBuildInputs = with pkgs; [
          pkg-config
          rustToolchain
        ];

        buildInputs =
          with pkgs;
          [
            sqlite
            openssl
            dbus # Required by many mpris implementations
          ]
          ++ lib.optionals stdenv.isDarwin [
            darwin.apple_sdk.frameworks.Security
            darwin.apple_sdk.frameworks.SystemConfiguration
          ];

        # 4. Build the project
        # This splits the build into "deps" and "project" for better caching
        commonArgs = {
          src = craneLib.cleanCargoSource (craneLib.path ./.);
          strictDeps = true;
          inherit buildInputs nativeBuildInputs;
        };

        cargoArtifacts = craneLib.buildDepsOnly commonArgs;
        rate_music = craneLib.buildPackage (
          commonArgs
          // {
            inherit cargoArtifacts;
          }
        );

      in
      {
        packages.default = rate_music;

        devShells.default = pkgs.mkShell {
          inputsFrom = [ rate_music ];
          # Extra tools for development
          nativeBuildInputs = with pkgs; [
            rust-analyzer
            sqlx-cli
          ];

          # SQLX environment variable if you're using offline mode or a specific DB path
          shellHook = ''
            export DATABASE_URL="sqlite:./rate_music.db"
          '';
        };
      }
    );
}